This is interesting, and apologies if this is a hijack, I have bought some mk3 carriers and calipers and done plenty of searching on here and other forums of late to get the definitive answer to the BBS RA's / 280mm question, and it appears some do and some don't fit ET35 vs ET38 apparently. However I am trying to understand if the spacer suggestion is a good step or not, I am unsure of the downsides to be honest so any info on this also would be much appreciated. Again apologies if this is deemed a hijack.